Know all about Adakite and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Adakite and Icelandite belong to Igneous Rocks.Texture of Adakite is Porphyritic whereas that of Icelandite is Aphanitic to Porphyritic. Adakite appears Dull and Soft and Icelandite appears Dull and Soft. The luster of Adakite is grainy, pearly and vitreous while that of Icelandite is vitreous. Adakite is available in black, brown, light to dark grey colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Adakite are commemorative tablets, pottery, used in aquariums and that of Icelandite are cemetery markers, creating artwork.